Telegraphy.



No. 800,155. PATENTED SEPT. 26, 1905.

F. JONE$.

ll q TELEGRAPHY.

APPLICATION FILED MAR.11, 1905.

2 SHEETS-SHEET 1| No. 800,165. PATEN'TED SEPT. 26, 1905.

P. w. JONES. TELEGRAPHY.

APPLICATION FILED MARJI, 1905.

2 SHEETS-SHEET 2.

UNITED sTATEs PATENT OFFICE. FRANCIS W. JONES, 0F NEW YORK, N. Y. i v

i TELEGQRAPHL.

Specification oi Letters Patent.

Patented Sept. 26, 1905.

Application filed March 11 1905. Serial No. 249,521.

To. aZl whom it may concern.-

Be it known that I, FRANCIS WILEY J ONES; a citizen of the United States, residing in the? city of New York, in the county and State of arate independent messages are simultane-Q ously transmitted without interference. I provide a suitable conductor, such as an;

insulated wire, and transmit one set of sig-f nals on this circuit by varying the normal: current, as by reversals or by making and breaking the circuit, or I provide balanced;-

I suitable transmitting and receiving devices,

such as the Morse key, a continuity-preserving transmitter and a polarized receiving 1n- I strumentwith appropriate local circuits. The

drawings illustrate my having main-line straight-current generators 3 and 4. There are three stations 5, 6, and 7. 5 and 7 are terminal stations. 6 is an intermediate station. At each of these stations 5,

6, and 7 there is an ordinary set of Morse signaling apparatus consisting of a key 8, re-

lay 9, and sounder s operated through the medium of a local circuit. At each station 5 6 7 there is a condenser in a branch circuit connecting opposite terminals of the set of instruments. The generators 3 and 4 have a similar condenser 7a in a branch circuit connecting their opposite poles. The object of this branch circuit with the condenser is to provide a path around the described instruments that shall be free to transmit short and rapid impulses'of electricity of alternating polarity generated at the rate of four or five hundred per second. I have shown two stations a and bat intermediate points on the circuit m equipped with apparatus by which said stations are enabled to carry on a separate and independent set of signals simultaneously with'the operation of signaling between the simple Morse stations 5, 6, and 7. The apparatus'is alike at both stations a'and b. g

is an alternating-current generator operated by any suitable power and capable of developing four or five hundred alternations per second. This generator is continuously operating and is connected in a local circuit with the primary coil .11 of a transformer the secondary coil 12 of which is in the main line'm. By this means impulses are generated or produced flowing in one direction in the circuit m, as distinguished from impulses thrown onto the circuit mthrough a condenser to divide and flow in both directions. These transformercoils have preferably wire of the same size, the same resistance, preferably low, and the same number of turns or convolutions. or receiving instrument, preferably polarized.

Relay r operates a local circuit 20, containing a repeating-sounder 21, and repeating-sounder 21 controls-a local circuit 22, in which there "is a' Morse sounder 23. This arrangement of two local circuits, one of which operates the other, is known to artisans and operators as ris a relay 50 is a local circuit extending from Ioo the relay 1" to the transmitter-lever 53, thence cuit 5O breaks contact with-*the lever 51 and lever 51 closes on the contact 52, thus completing the local circuit'containing tiie generator g through the local branch 54 and-coil 11.

Upon the return movement a local circuit is completed including thewire 50, the relay 4,

- eration of transmitting when the generator 1 line a with the resistance 38. are arranged to give capacity to the artificial is on a closed local circuit, excluding the resistance of the receiving branch.

In Fig. 2 I have shown an arrangement whereby I am able to transmit two messages and receive two messages simultaneously. at is asuitable telegraph-circuit. 12 represents polarized differential relays having one coil in the natural line m and one coil in the artificial Condensers in lines a in a well-known manner. The polarized relay 2) operatesa sounder. r is a receivinginstrument for the rapidly-alternating impulses of the character heretofore described by me. This relay operates the bug-trap arrangement of local circuits and sounders heretofore described. I balance the main line m with the artificial line a, giving to each the same resistance, capacity, and inductance.

The relay 1 is included in a bridge-wire 91 containing condenser 92. At each station a and b there are straight current-generators of opposite polarity 3 and 5, 4 and 6. Tis apolechangingtransmitter for changing from a generator 3 to 5 and backagain, at station a, for instance, providing a means for reversing the current in a well-known manner, signals being transmitted by reversals in polarity of the main-line current. The transmitter 25 controls the alternating-current generator 9 in the 10- cal circuit 50 with the primary 11 of a transformer the secondary 12 of which is in the transmitter branch 93. There is a condenser 70 in a local branch circuit connected around the secondary coil 12 of the transformer. When the operating-lever of transmitter t is on its closed contact, outgoing signals in the transmitter branch 93 are balanced upon the relays p and a" at station a, but are effective to operate the relay 7' at station I). The alternating impulses-are not effective in the coils of the relay at station a by reason of the presence of the inductance 2', which may be made of any desired proportions; but these rapid alternations-are effective in the receiving instrument 7' at station 5, and by this arrangement two sets of signals may be transmitted from a to b and two sets of signals may be transmitted from b to a simultaneously withoutinterference. Condenserskareplaced in branch circuits around the coils of the relay p in both the line on and the artificial line a, the object being to afford a free path around the coils of the relay p for the alternatingcurrent impulses.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination with a suitable telegraplrcircuitol means for signaling by throwing into the line short and rapid alternations of current, said means including a local circuit having two branches at each station, a transfori'ner inductively connecting both branches of said circuit with the main line, a source of rapidly-altcrnating current in one branch, a suitable relay in a second branch, and a device for opening thereceivingbranch and closing the transmitting branch and vice versa in the act of transmitting.

2. The combination with a main circuitconnecting separated stations, of means tor signaling by dividing a continuous current into impulses of varying length and means fol-signaling by dividing short and rapid current alternations into groups of varying length, means for rendering the relays or receiving instruments irresponsive to outgoing signals and responsive to incoming signals, consisting of an artificial line, a capacity and a resistance in the artificial line, an inductance in said line between said relays, an inductance in the main line between said relays, a condenser in series with the alternating-current relay in a branch wire connecting the main and artificial lines and branch circuits each containing a condenser connected to the terminals of the continuous-current relay in both the main and artificial lines.

3. The combination with amain telegraphline connecting separated stations, of means for simultaneously exchanging signals in opposite directions by dividing a continuous current into impulses of varying length and means for simultaneously exchanging signals in opposite directions by dividing short and rapid current alternations into grou ps oi varying length, means at each station for rendering the relays or receiving instruments irresponsive to outgoing signals and responsive to incoming signals consisting-of an artificial line, a resistance and a capacity for said line, a condenser in series with the alternating-current relay in a branch wire connecting the main and artificial lines, a repeating-sounder operated by said relay, a reading-sounder operated by the repeating-sounder, a polarized relay differentially wound and connected into the main and artificial lines, an inductance in the main line between said relays, an inductance in the artificial line between said relays, a transmitter branch connected to the junction of the main and artificial lines containing a source of short and rapid current alternations controlled by a suitable transmitting device and a source of continuous currents controlled by asuitable transmitting device.

4. In a quadruplex telegraph the combination with a main telegraph-line connecting separated stations, of means for simultaneously exchanging signals in opposite directions by dividing a continuous current into impulses of varying length and means for si- ICC multaneously exchanging signals in opposite directions by dividing short and rapid current alternations into groups of varying length; means at each station for rendering the relays or receiving instruments irresponsive to outgoing signals and responsive to incoming signals consisting of an artificial line, a resistance and a capacity for said line, a condenser in series with a polarized relay having a single winding in a branch wire connecting the main and artificial lines, a repeating-sounder operated by said relay. a reading-sounder operated by the repeating-sounder, a polarized relay difierentially wound and connected into the main and artificial lines and inductances in the main and artificial. lines between said relays and a transmitter branch connected with the junction of the main and artificial lines containing a source of alternating current controlled by a suitable transmitter and asource of continuous currents controlled by a suitable transmitter. a

5. Ina quadruplex telegraph the combination at one terminal station of a main line, an artificial line, a resistance and a capacity for said artificial line, a differentially-wound polarized relay having a coil in the main line and a coil in the artificial line, a polarized relay having a single coil in a branch circuit connecting the main and artificial lines, a condenser in series with said relay in said branch, inductances in the main and artificial lines between said relays and a transmitter branch connected to the junction of the main and artificial lines containing a source of alternating currents controlled by a suitable transmitter and a source of continuous currents controlled by a suitable transmitter.

6. In a quadruplex telegraph, the combination at one terminal station of a main line, an'

artificial line, a resistance and a capacity for said artificial line, a difierentially-Wound p0- larized relay having a coil in themain line and a coil in the artificial line, a polarized relay having a single coil in a branch circuit connecting the main and artificial lines, a condenser in series with said relay in said branch; inductances in the main and'artificial linesbetween said relays and a transmitter branch connected to'the junction of the main and artificial lines containing a source of alternating currents controlled by a suitable transmitter and a source of continuous'currents controlled by a suitable transmitter.

FRANCIS W. JONES.- Witnesses:

HARRY R. MONAHAN, JOSEPH J. CARDo'NA. 

